Die for making can-heads



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A. PKREMY.

DIE FOR MAKING. GAN HEAD-S. v

No. 563,688. Patented July 7, 1896.

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(No Model.) r 3 Sheets-Sheet A. P. REMY. DIE FOR MAKING CAN HEADS.

No. 563,688. Patented-July 7, 1896.

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No. 563,688. Patented July 7, 1896.

PATENT EEicE.

ALBERT F. REMY, OF MANSFIELD, OHIO.

DIE FOR MAKING CAN-HEADS.

SPECIFICATION forming part of Letters Patent No. 563,688, dated July 7,1896.

Application filed April 3, 1896. Serial No. 586,145. (No model.)

To all 1072 0121 it may concern..-

Be it known that I, ALBERT F. BEMY, a citizen of the United States,residing at Mansfield, in the county of Richland and State of Ohio, haveinvented certain new and useful Improvements in Dies for MakingCan-Heads; and I do hereby declare the following to be a full, clear,and exact description of the invention, such as will enable othersskilled in the art to which it appertains to make and use the same.

My invention relates to dies for making the heads of cans or packagesused for packing food substances or otlier articles, and the improvementrelates more especially to dies constructed in a manner to produce ahead for receiving a ripping or cutting wire, which head is to be unitedto a can-body to produce a self-openingor key-opening" can or package.

The object of my invention is to provide a simple construction which atone operation produces from a simple flat piece of sheet metal a headwhich is formed with a flanged, beaded, and grooved edgeand with abulged or raised portion within the bead and flange, said raised orbulged portion having an inwardly-opening aperture, which may be or ispartially closed by a lip or fragment of metal integral with thecanhead.

To the accomplishment of these ends, my improvement consists, first, ina pair of dies, one of which dies is provided with a yield. able ormovable ring and with a rigid rib or flange within said movable ring,and the other die having a groove or recess coincident with the rigidrib or flange in the firstnamed die, whereby the movable ring in thefemale die is adapted to be depressed under the pressure from the maledie to such an extent as to allow the rigid rib or flange to force themetal into the groove of the male die and thereby shape the metal toform a can-head which has, at its circumference, a flange and a hollowbead forming an annular groove between the flange and the flat porticuof said head.

My invention further consists in a female die provided with a punchwhich rises from the face thereof and is situated, practically, withinthe annular rib or flange, said punch having at its upper end aprojecting tooth or spur, combined with a male die formed with a cavityand with a recess so arranged as to receive the raised portion andpunched metal produced in the sheet-metal blank by the operation of thepunch and its tooth of the male die; and the invention further consistsin the novel combination of devices and in the construction andarrangement of parts which will be hereinafter fully described andclaimed.

To enable others to understand my inven tion, I have illustrated thesame in the accompanying drawings, forming a part of this specification,and in which Figures 1 and z. are plan or face views of the male andfemale dies, respectively, embodying my invention. Fig. 3 is a verticaltransverse sectional view through the male die on the plane indicated bythe dotted line 3 3 of Fig. 1. Fig. 4 is a vertical sectional viewthrough the female die on the plane indicated by the dotted line it offFig. 2. Fig. 5 is a detail perspective view, on an enlarged scale, of apart of the female die to better illustrate the form of the punch andits prong or tooth. Fig. 6 is a vertical sectional view through the twodies, illustrating them adjusted together for shaping and forming asheet-metal blank into acan-head,

such as hereinbefore described, and Figs. 7 and 8 are views of thecan-head to be produced by dies embodying my invention.

Like letters of reference denote corresponding parts in all the figuresof the drawings, referring to which A B designate the two coacting dies,the former, A, being the female die and the latter, B, the male die.

The female die proper, A, is seated or fastened rigidly within asuitable base 0, that is designed or adapted to be secured within asuitable metal stamping and shaping ma chine. This die A has around itscircular edge the annular rib or flange D, which extends above the flathorizontal die-face a for a distance equal to the depth of the groove tobe produced, along with a bead in the sheet-metal blank by the operationof the two coactin g dies A B. This annular grooveand-bead-forming ribor flange D is integral with said female die, as shown, or it may bemade separate from the die and rigidly at IOC tached thereto. Saidfemale die A is further provided with the punch E, which is situatedwithin the annular rib or flange D. The shape of this punch E issomewhat segmental in horizontal section and tapers from the base to thetop thereof, said punch being approximately in the form of a half-conewith its flat side next to the rib or flange D, the tapered punchextending from the inner wall of said rib D inwardly toward the axis ofthe die A.

. Said punch E extends upward from the flat face a of the die A for adistance about equal to the depth of the rib D, and from the upperextremity,or what may be termed the apex, of this punch E projects thetooth or spur E. Said spur E is rigid or integral with the punch and ribor flange of the female die, and it projects a short distance above thepunch and rib of said die, as shown more clearly by Fig. 5 of thedrawings. I prefer to make the tooth E incline inwardly away from therib or flange and to make said spur of tapered form.

The base 0 is of greater diameter than the female die A, and thelatter'is seated centrally within said base in a manner to leave anannular space between the circular edge of the die A and the inner faceof the circular wall 0 of the base. In this annular space between thebase and die is fitted a movable ring F, which surrounds the die andnormally projects a suitable distance above the die-face a, the rib D,and punch E E of said die A. The circular wall 0 of the base has itsupper face, around the inner edge thereof, shaped to lie at differentheights or elevations, so as to produce a cutting edge 0 around theinner edge of said wall 0, and this edge 0 projects above the movablering F at certain points, while at other points said cutting edge liesbelow the ring F when the latter is in its normal position preparatoryto the introduction of the sheet of metal between the two dies A B, suchform of the cutting edge e causing it to easily sever the metal in diskform from the sheet of metal.

The male die B carries an external ring G of a diameter and width toexactly register with the movable ring F of the female die. \Vithin thisrigid external ring G, and in the face I) of the male die, is producedan annular groove h, which is concentric with the vertical axis of saiddie B and with its external rigid ring G; and in said groove h is seateda yielding clamping-ring II. Said clamping-ring is backed or held by asuitable spring or springs, as is common in sheetmetal-shaping dies, andsaid clamping-ring II and the backing-springs thereof are so arrangedthat, normally, the lower edge of the clamping-ring extends below thecorresponding (or lower) edge of the fixed external ring G of said maledie, said-clamping-ring II being adapted to move into the groove h adistance equal to its projection beyond the dieface b, so that the outeror lower edge of the ring II will lie flush with the face Z) when thedies are brought together. This male die is further provided with abead-formin g groove I, which is produced in the face 1) within therigid external ring G, concentric therewith. and also concentric withthe vertical axis of the die B. This groove is so formed in the die A asto register with the rib or flange D when the two dies are properlyadjusted, and said groove receives the metal raised in the blank by theoperation of the rib or flange D. whereby the groove I and rib D in thetwo dies serve to produce in the sheet-blank the flange, bead, andgroove of the can-head.

The die B is further provided with a cavity J, which is cut or producedin the face I) of the die, so as to open into the groove 1, and thiscavity conforms in shape substantially to the contour of the punch E. Inthe die B is produced the recess J, which is formed in the dieimmediately above the groove I and in a plane at one side of the cavityJ. The cavity J and the recess J are produced in the die B in suchpositions that, when the dies are brought together, the metal struck upby the punch E is forced into the cavity J, while the lip or fragment ofmetal and the spur E are forced into the recess J.

In the face a of the female die is produced a recess K and in the faceI) of the male die is a matrix K, which are arranged to register whenthe dies are brought together and produce a recess in the can-headsuitable to receive a key which is supplied with the can or package forthe purpose of coiling the ripping-wire on said keyin the operation ofcutting the head from the body of the package or can.

In Figs. 7 and 8 I have shown the head produced by the operation of mydies. The head L has a bead Z, which projects from the outer facethereof, and it also has a flange the groove Z being formed by andbetween the bead and flange. \Vithin the beadZ is the raised or bulgedportion m, and in said bulged portion is an aperture m, which opensinwardly of the can head, said aperture being adapted to be partiallyclosed by a tongue or fragment m of metal integral with the head L.

The operation of the dies may be described as follows: The base 0 withthe female die A is suitably secured in an ordinary sheetmetal stampingand shaping press, and the male die B is fastened to a reciprocatingplunger of said press, said dies being adjust ed to insure registrationof the ring F with ring G, the rib or flange D with groove I, the punchE and prong E with cavity J and re cess J, and the matrix K with theflange K. A sheet of flat metal suitable for making a can-head, is fedbetween the dies A B, and the die B is forced down on top of the ring F,thus elampin g the metal between the rings F G. As the die B descendsthe ring F is depressed, which causes the cutting edge to sever themetal, and the disk confined between the rings F G is carried down withsaid rings, so as to be presented to the rib I). The ring F descendsbelow the face a of the die A and the metal is forced up by the rib Dinto the groove I, (see Fig. 6,) thus producing the groove Z" in oneface of the can-head and forming the bead Z and flange I on the oppositeface and edge of the canhead. At the same operation the punch E and itsprong E produce in the head the bulged portion m, the aperture m, andthe tongue m", the metal raised by said punch and spur entering thecavity and recess J J, respectively. During this operation thespring-backed ring H bears on the solid face a of the die and it yieldsupwardly, so that the projection K of die B will force the metal intothe matrix K, thus producing the cavity in the middle of the canhoad.The dies now separate, and the head L is ejected from the female die bya suitable ejector and by the upward movementof the ring F. The heademerges from the lower or female die in a complete condition, ready toreceive the ripping-Wire, and said head I is thus made or completed atone operation of the coacting dies.

I am aware that changes in the form and proportion of parts and thedetails of construction herein shown and described as the preferredembodiment of my invention can be made by a skilled mechanic withoutdeparting from the spirit or sacrificing the advantages of my invention,and I therefore reserve the right to make such modifications as fairlyfall within the scope of my invention.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is

1. Goacting dies for making can-heads, the female die provided with afixed punch and with a puncturing tooth or spur, and the male die havinga coincident cavity and recess, for the purposes described,substantially as set forth.

2. In dies for stamping or shaping canheads, a female die provided witha bead and flange forming rib, a fixed punch Within said rib, and a spuror tooth extending above the rib and punch, combined with a male diehaving a groove coincident with the rib, a cavity and a recess toregister, respectively, with said punch and the tooth or spur,substantially as and for the purposes described.

3. In dies for stamping and shaping canheads, the female die providedwith a fixed punch Within a rib D and with a projecting tooth or spur,combined with a movable ring which surrounds said female die, and a maledie having a rigid external ring, an annular groove in its facecoincident with the rib, a cavity and the recess which register,respectively, with the punch and the tooth or spur of the female die,substantially as and for the purposes described.

In testimony whereof I affix my signature in presence of two witnesses.

ALBERT F. REMY.

Witnesses:

L. S. Korrns, EDWIN IIODKINSON.

